福島県只見地域の流紋岩質水中溶岩の産状と形成機構(<特集>水底における火山活動とその噴出物)

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概要

• 論文の詳細を見る

• Middle Miocene subaqueous rhyolitic lavas and volcaniclastic rocks are dominated over the southern part of the Inner Zone of Northeast Japan. Managawa rhyolite lavas and Yatagashima.volcaniclastic rocks are one of these rocks. The former occur as discrete domes in the latter. The domes generally consist outwards of a massive lithic rhyolite core, a flowed lithic rhyolite, a flowed spherulitic rhyolite, and a perlite rim. Yatagashima volcaniclastic rocks are composed mainly of pumice lapilli, and contain some lithic or glassy fragments. A inferred eruptive cycle began with eruption of vesicular lava, Yatagashima volcaniclastic rocks were formed during initial stage of this cycle, and lithic or glassy fragments were derived from disintegration of domes which were extruded during later stage. This cycle was repeated until the total lava domes and volcaniclastic rocks were formed.

• 地学団体研究会の論文
• 1990-11-25

著者

• 黒川 明

  甲西町教育委員会

• 黒川 明

  新潟大学自然科学研究科環境科学専攻

関連論文

• 古琵琶湖層群産足跡化石とその調査・研究法 (特集『古琵琶湖層群の化石』)
• 福島県只見地域に分布する大塩層の火山層序とステージ区分
• 福島県只見地域の流紋岩質水中溶岩の産状と形成機構(水底における火山活動とその噴出物)

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